4909results about "Gas current separation" patented technology

The invention relates to the technical field of screening, in particular to a dynamic sorting method and system based on multistage screening and airflow compensation. The method comprises the steps that 1, space phase screening pretreatment is conducted, specifically, in a rotary type multidirectional screening channel, white rice is made to rotate through a flow guide structure, the included angle between the long axis direction of rice grains and the long edge of a screening hole is obtained in real time, and the rotating angular speed of a screen is dynamically adjusted according to the included angle; 2, mass-airflow coupling sorting is carried out; step 3, performing deformation feedback optical sorting; 4, energy field cooperative control; and 5, dynamic convergence optimization: collecting a screen mesh pore passing rate, a rice grain group distribution entropy value and system total energy consumption power, constructing a state space, and adjusting vibration frequency, airflow pressure and light intensity parameters by adopting a stability judgment algorithm. According to the method, the screening precision is improved, the energy consumption is reduced, the production efficiency is improved, and the method has remarkable practical application value for the grain processing industry.

The invention relates to the technical field of screening and collecting equipment, and particularly discloses a magnesium ingot cutting material collecting device which comprises a magnesium chip collecting box, a screening mechanism and a magnesium powder collecting assembly, the screening mechanism is used for separating magnesium chips from magnesium powder and comprises a box body, a screen, a vibration assembly and an air blowing assembly, and a material inlet and a magnesium chip outlet are formed in the box body; a magnesium chip and magnesium powder mixed material can fall on the screen when being conveyed into the box body, and the screen can drive magnesium chips to move towards the magnesium chip outlet when vibrating; the air blowing assembly is used for outputting upward separation airflow, the separation airflow can carry magnesium powder to move upwards when passing through the screen, so that the magnesium powder is separated from the magnesium chips, the magnesium powder collecting assembly is located above the screen, and the separation airflow can carry the magnesium powder to enter the magnesium powder collecting assembly. During use, magnesium chips and magnesium powder can be separated and collected, so that fire or explosion possibly caused by static electricity, friction or high temperature during storage due to the fact that the magnesium chips contain the magnesium powder is prevented.

The invention discloses a comprehensive treatment method of lotus seeds, and belongs to the technical field of deep processing of agricultural products. The method comprises the following steps: collecting dry shell lotuses and sending to step S2; s2, grading the lotus seeds with the dry shells, shelling the lotus seeds with a shelling machine, gathering the lotus seeds, winnowing the lotus seeds, and sending the lotus seeds to the step S3; s3, carrying out color sorting by adopting a color sorter, and sending qualified red lotus seeds to step S4; the shelled lotus seeds are sent to the step S2; the semi-finished product is sent to step S5; s4, the red lotus seeds are manually selected, and red lotus seed products are obtained; s5, grading the semi-finished product, removing cores, gathering, screening out lotus cores to obtain core-removed red lotus seeds, and respectively sending the core-removed red lotus seeds to step S6 and / or S7; s6, screening and manually selecting the red lotus seeds without cores to obtain red lotus seed products without cores; s7, grading the red lotus seeds without the cores, grinding the red lotus seeds, collecting the red lotus seeds and sending the red lotus seeds to the step S8; and S8, performing color sorting on the polished lotus seeds, and then performing screening and manual selection to obtain white lotus seed products.

The invention discloses a diaphragm sorting device for waste lithium battery recycling, and relates to the technical field of diaphragm sorting, the diaphragm sorting device for waste lithium battery recycling comprises a shell, a screening assembly, a winnowing assembly and an adsorption separation assembly.Large particles, medium particles and light materials are screened out through small screen holes, medium screen holes and large screen holes in a screen, and when the screen reciprocates up and down, the large particles and the medium particles are separated; the two symmetrically-arranged baffles are driven by the connecting rod to conduct continuous opening and closing actions, periodic opening and closing are achieved, the opening and closing frequency of the baffles is synchronous with the vibration frequency of the screen, dynamic control over falling materials is formed, it can be ensured that the materials falling every time are single-layer particles, multi-layer accumulation is avoided, and when the single-layer materials fall, the particles are evenly distributed in the vertical direction, and the quality of the particles is improved. Air flow can vertically act on each particle conveniently, the situation that bottom layer particles in multiple layers of materials cannot be effectively separated due to insufficient air flow penetration is avoided, and the screening precision is remarkably improved through linkage control of screen vibration and the baffles.

The invention discloses a secondary treatment process of cigarette butt recovery treatment waste, which comprises the following steps of: based on the characteristic that the quality of cigarette butts is increased due to dampness, carrying out coarse classification on the collected cigarette butts by utilizing a winnowing machine; installing a camera on the conveying device, connecting the camera with an image recognition system, and carrying out fine classification according to the characteristics of the cigarette butts; effective materials and chemical components of the cigarette butts are extracted by means of physical crushing and chemical extraction; compared with the prior art, the method has a relatively complete cigarette end pretreatment and harmful substance treatment process, an image analysis model is formulated and updated in time, accurate and effective data support is provided for cigarette end classification, a cigarette end classification mode and a key cigarette end locking target are optimized, the time cost of cigarette end classification is greatly reduced, and the cigarette end classification efficiency is improved. Corresponding equipment and effective component extraction materials are selected according to different types of cigarette butts, so that the utilization rate of the equipment and the materials can be increased.

The invention relates to the technical field of screening structures, in particular to a screening device for preparing high-purity graphite, which comprises an outer barrel and a screening drum positioned on the inner side of the outer barrel, the screening drum rotates in the outer barrel, an air inlet pipeline is arranged between the outer barrel and the screening drum, and the air inlet pipeline is in sliding contact with the outer wall of the screening drum; the mode that graphite is screened in space is adopted, the area of a screening area can be increased, compared with a traditional screen type plane screening mode, the screening area is larger, the screening efficiency is higher, and the phenomenon of graphite accumulation is avoided; due to the fact that the graphite is dispersed through the airflow, the graphite can penetrate through the screen drum at any position in space, and when the airflow carries the graphite to penetrate through the screen drum, the airflow can guide the graphite, so that the liquidity of the graphite is improved, and the situation that a large amount of graphite is accumulated at the positions of the screen holes and blocks the screen holes is avoided.

The invention provides a high-value recovery method and device for a retired double-glass photovoltaic module. The high-value recovery method comprises the four steps of lossless disassembly of a frame and a junction box, gradient separation of double-sided glass, segmented pyrolysis of inert gas and material sorting. On the basis of gradient pyrolysis and flexible separation and recovery technologies, nondestructive recovery of the double-sided glass is realized, and complete separation of the double-sided glass is realized by gradient heating and flexible stripping technologies; high-value battery pieces are reserved, and thermal damage is avoided through segmented pyrolysis and ultrasonic vibration; resources are circulated in a closed-loop mode, the reutilization rate of glass, battery pieces and welding strips is high, and the retired double-glass assembly can achieve all-material closed-loop recycling.

The utility model relates to the technical field of traditional Chinese medicinal material treatment, in particular to material screening equipment for traditional Chinese medicinal material treatment, and aims to solve the technical problems that a traditional winnowing technology is low in separation precision, poor in adaptability to medicinal materials with different densities and shapes and prone to causing medicinal material loss. Comprising a feeding mechanism, a winnowing box, an air inlet channel, an air channel, a discharging channel, an air pipe, an air outlet, a ball valve, a sliding plate, a connecting plate, a hydraulic cylinder, a support, a feeding shell, feeding blades and a feeding shaft, a draught fan blows air into the winnowing box through the air inlet channel to conduct winnowing on medicinal materials, and then high-speed airflow carries the medicinal materials to enter the next winnowing box through the air channel. The wind power in the next winnowing box is reduced by adjusting the opening degree of the ball valve, impurities with the quality slightly close to that of normal medicinal materials are further removed, in this way, during multi-stage treatment, complete separation of the medicinal materials and the impurities and impurity removal, all the sliding plates are controlled to slide out at the same time, the winnowing boxes are communicated with one another, impurities fall down and are discharged through the bottom winnowing box, and impurity removal is completed.

The invention provides multi-mechanism collaborative plastic waste recovery equipment and method, and relates to the technical field of waste treatment equipment, the equipment comprises a recovery box, a crushing mechanism, a separation mechanism and a cleaning assembly; the crushing mechanism comprises a shell, a motor, a belt pulley and a crushing roller; the separating mechanism comprises a collecting cover, a separating hole, a conveying pipe, a collecting box and a negative pressure fan; the cleaning assembly comprises a connecting rod and a cleaning rod, and the cleaning rod makes contact with the inner wall of the collecting cover. The method comprises the four steps of intelligent material identification, dynamic adjustable crushing, multi-stage separation and collection and automatic cleaning and maintenance. Through cooperation of the crushing mechanism, the separating mechanism and the cleaning assembly, efficient separation of plastic particles is achieved; impurity accumulation is prevented through an automatic cleaning mechanism; the energy consumption is reduced through power reuse; and the automation level and adaptability of the equipment are improved through multi-stage intelligent control, and the problems of low separation efficiency and difficult maintenance in the prior art are effectively solved.

The invention relates to the technical field of molecular sieve and dust separation, in particular to a pressure swing adsorption molecular sieve screening device which is characterized in that the upper end of a screening pipe is connected with the upper end of a dust conveying pipe, and the lower end of the dust conveying pipe is connected with the lower end of a primary dust collecting pipe; a plurality of air supply branch pipes are arranged in the lower portion of the screening pipe, a feeding port is formed in one side of the upper portion of the screening pipe and connected with a feeding hopper, the feeding hopper is connected with a feeding pipe, and a transverse dispersing device and a longitudinal dispersing device are arranged on the inclined face in the feeding hopper. And a screen is arranged in the screening pipe, and the screen is arranged between the feeding port and the air supply branch pipe. The air supply branch pipe on the lower portion of the screening pipe provides airflow into the screening pipe and is used for separating dust and a molecular sieve; the device is used for regularly screening and removing pulverized molecular sieve particles, so that the requirement of frequent replacement caused by aging and crushing of the molecular sieve is reduced, the production cost is reduced, and the oxygen production efficiency and the product quality are improved.

The invention relates to the technical field of ore particle screening, and discloses high-recovery-rate micro-fine-particle magnetite ore dressing equipment which comprises a mounting frame, a protective shell is fixedly mounted on the mounting frame, a screening assembly is arranged on the protective shell, and the screening assembly comprises a three-way pipe. In order to enable the high-recovery-rate micro-fine-particle magnetic iron ore preparation equipment to be suitable for efficient separation of high-added-value micro-fine-particle iron ore, the screening assembly is arranged, the screening assembly is matched with a power motor to drive a large belt wheel through a small belt wheel and a transmission belt, an output shaft drives an auger rod to push ore in a three-way pipe, feeding blockage is avoided, and the high-recovery-rate micro-fine-particle magnetic iron ore preparation equipment is suitable for efficient separation of high-added-value micro-fine-particle iron ore. And meanwhile, a centrifugal motor drives a trilateral frame to drive a centrifugal screen drum to rotate at a high speed, fine particles fall into a discharging hopper through screen holes by utilizing centrifugal force, and coarse particles are discharged from a first discharging pipe through a mounting drum. And the stirring paddle rotates synchronously to prevent the fine particles from accumulating in the funnel.

The invention discloses an intelligent screening and scrap recycling method and device for a steel ball hard grinding machine, and relates to the technical field of industrial automatic control and recycling monitoring. The intelligent screening and scrap recycling method and device for the steel ball hard grinding machine comprise the following steps that S1, scrap separation operation data are collected in real time, and the scrap separation operation data are preprocessed; s2, chipping separation collaborative evaluation is carried out on the chipping separation operation data; s3, wind power regulation decision guidance is carried out on the debris separation operation data entering the regulation area; s4, storing and analyzing historical operation data and adjustment results; and S5, integrating the chipping separation operation data, the chipping separation collaborative evaluation result and the wind power regulation decision guide result to execute operation fluctuation early warning triggering. The problems of separation efficiency fluctuation and serious mistaken separation caused by unstable air pressure, material distribution change and other factors in the winnowing and magnetic suction recovery process after the chippings are screened are solved.

The invention relates to the technical field of seed selection, and provides a crop seed selection system which comprises a screening device, the screening device is detachably connected with a first air screening machine, the screening device is used for separating seeds from seed shells and dust, and the screening device comprises an elevator, a winnowing mechanism and a cyclone separator; the elevator is arranged on the side close to the first air screening machine, grains enter the elevator after being screened in the winnowing mechanism, the winnowing mechanism is used for separating seed husks and dust in the grains, the cyclone separator communicates with the winnowing mechanism, the cyclone separator is used for separating and collecting the seed husks and the dust in the winnowing mechanism, and the cyclone separator is used for separating and collecting the seed husks and the dust in the winnowing mechanism. The airtight device is detachably connected with the discharging port of the elevator, the airtight device is used for controlling the air inlet in the elevator, then the air inlet direction of the winnowing mechanism is adjusted, and the technical problem that in the prior art, air pollution is large in the crop seed selecting process is solved.

The invention relates to the technical field of mineral separation, and discloses a sticky and wet mineral separation system and method based on a dry separation bed, and the system comprises the dry separation bed and a separation control device; the dividing module is configured to determine the area aperture ratio corresponding to each sorting area; the acquisition module is configured to determine a sorting strategy corresponding to the sorting area based on the density data and the granularity data; the air supply judgment and adjustment module is configured to determine an air supply adjustment coefficient of the regional air supply amount based on the humidity data and the pressure distribution data and obtain the regional adjustment air supply amount; the stirring judgment and adjustment module is configured to determine a stirring adjustment coefficient of a regional stirring speed according to the real-time image data and obtain a regional adjustment stirring amount; the storage module is configured to store an air supply adjustment coefficient and a stirring adjustment coefficient. Intelligent adjustment can be carried out according to the characteristics of the to-be-separated minerals, and therefore the separation efficiency and accuracy are improved.

The invention provides an intelligent sorting system and method for construction waste, and belongs to the technical field of construction waste sorting. The system comprises a feeding machine, a spiral screen, a first conveying belt, a second conveying belt, a third conveying belt, an inclined sorting conveying belt, an electromagnetic iron remover, a bouncing screen, a fourth conveying belt, a fifth conveying belt, a bar screen, a sixth conveying belt, a seventh conveying belt, an eighth conveying belt, a flip-flow screen, a ninth conveying belt, a tenth conveying belt, a magnetic substance collecting area, a light substance collecting area, a visual auxiliary sorting room and a crushing transfer area. A finished product collecting area and a control device; according to the construction waste sorting system, through combination of multi-stage screening and intelligent sorting, efficient and accurate sorting of construction waste is achieved, it is guaranteed that the purity of concrete and tiles entering the crusher is high, the sorting efficiency is remarkably improved, and the labor cost is reduced.

The invention relates to the technical field of powder selecting machines, and particularly discloses a composite powder selecting machine which comprises a first filtering bin, an airflow bin and a second filtering bin, a plurality of scraping plates are rotationally connected in the first filtering bin through a gear ring, a fixing ring is rotationally connected to the gear ring, a discharging opening is formed in the fixing ring, a first vertebral plate is fixedly connected in the first filtering bin, and a second vertebral plate is fixedly connected in the second filtering bin. The airflow bin is fixedly connected with a second filtering bin, a vertebral plate II and a conical part are fixedly connected in the second filtering bin, the second filtering bin is fixedly connected with a discharging bin, the vertebral plate II is fixedly connected with a material guide pipe, the gear ring is connected with a motor II through a gear, and the airflow bin is connected with an air pump through an air guide pipe. The cement grinding device has the beneficial effects that cement can be scattered through a stirring plate in the storage bin, coarse powder can be filtered out through a first vertebral plate in the first filtering bin and is discharged from a discharging port through a scraper blade, the cement can rotate along a second vertebral plate through the airflow bin, medium powder and fine powder are separated, and finally the medium powder and the fine powder are separated.

The invention discloses plastic, paper and fabric waste mixture separation equipment and a separation method. The equipment comprises a cutting machine used for cutting a waste mixture into polygonal waste blocks with set sizes; the stirring device can receive the cut waste blocks, and a spray head is arranged in the stirring device and used for spraying water-repellent material mixed liquid to the waste blocks; the sealed cabin can be communicated with the discharging port of the stirring device, the humidity and temperature in the sealed cabin can be adjusted, and the sealed cabin is used for water absorption of paper and fabric in the waste blocks; the vibrating screen is arranged at the outlet of the sealed cabin and can separate plastic in the waste from paper and fabric after water absorption; and the winnowing machine is arranged at the discharging port of the vibrating screen, a fan is arranged in the winnowing machine, and the winnowing machine can separate out the residual light plastic in the paper and the fabric after water absorption through wind power. According to the separation method based on the equipment, plastic, paper and fabric waste mixtures can be efficiently separated and recycled in an environment-friendly mode, and resource waste is avoided.

The utility model discloses a capsule sorting device which comprises a sliding groove obliquely arranged on a support, and a feeding hopper is fixedly arranged at the obliquely upward end of the sliding groove. The flow guiding assembly is arranged at a discharging groove opening in the inclined downward end of the sliding groove and used for guiding the flow of the capsules, so that the capsules can slide out of the sliding groove side by side; the screening assembly is arranged on the support and used for driving the sliding groove to conduct reciprocating screening motion in the direction perpendicular to the material sliding direction. The sorting assembly is arranged at the position of a discharging groove opening in the inclined downward end of the sliding groove and comprises an air blowing assembly arranged below the discharging groove opening and an empty capsule collecting assembly arranged above the air blowing assembly. According to the capsule sorting device, the sliding groove is obliquely formed in the support, the flow guide assembly is arranged at the discharging groove opening of the sliding groove, capsules sliding down from the sliding groove can slide out of the discharging groove opening of the sliding groove side by side after being limited by the flow guide assembly, and the capsules are prevented from sliding out of the sliding groove in a mutually overlapped mode and affecting the sorting effect.

To provide a foreign matter separator and a foreign matter separation method that allow separation of metal wires being foreign matters contained in dust collected by a dust collector.SOLUTION: Dust collected by a dust collector 1 is mechanically sieved with a sieve 5, and the sieved dust is guided to a vertical pipe 7. Then, a gaseous matter is flown in from a lower part of the vertical pipe 7 to generate upward current inside the vertical pipe 7. Further, dust which has been separated according to flotation caused by the upward current is guided to a dust storage tank 8, and metal wires in the sieved dust are sedimented to be separated.SELECTED DRAWING: Figure 1

The utility model provides a cleaning device for picking up forest fruits in the technical field of forest fruit harvesting equipment, which comprises a driving mechanism and a rack, and the rack is connected with the driving mechanism in a pulling manner and is in transmission connection with a transmission mechanism through a power shaft on the driving mechanism and a power transmission shaft on the rack; the fruit picking assembly, the lifting assembly and the cleaning assembly in the machine frame are in transmission connection with the transmission assembly through a plurality of sets of continuous movement transmission pieces. The fruit picking assembly and the lifting assembly are obliquely arranged, the downwards-inclined end of the fruit picking assembly is close to the forward moving direction of the driving mechanism, the downwards-inclined end of the lifting assembly is arranged below the upwards-inclined end of the fruit picking assembly, a plurality of rows of shifting teeth are arranged in the fruit picking assembly, and an oblique fruit picking plate is arranged below the shifting teeth. According to the forest fruit picking and cleaning device, the production cost is reduced through modular design of the driving mechanism and the rack, and the problems that an existing picking and cleaning device is high in production cost and limited in impurity removal effect are solved by lifting, moving and winnowing picked falling forest fruits.

The invention relates to the technical field of power battery recycling, in particular to an efficient sorting and recycling device for power batteries. The technical problems that according to an existing waste power battery sorting and recycling device, sorting is not convenient according to the size of waste power batteries, and the power batteries with impurities attached to the surfaces of the waste power batteries are not convenient to remove are solved. The invention discloses an efficient sorting and recycling device for power batteries. The driving motor is fixedly connected to the upper part of the main bracket; the feeding frame is fixedly connected to the upper portion of the main support. A transmission straight gear rotates reversely to drive a straight gear ring, a screening ring, a small limiting frame, a middle limiting frame, a large limiting frame and a limiting ring to rotate reversely, and the waste power batteries sequentially pass through three discharging groove rows in a multi-groove discharging frame from small to large and then fall downwards. And a worker collects the waste power batteries falling downwards from the three discharging grooves in the multi-groove discharging frame so as to sort the waste power batteries according to the sizes of the waste power batteries.

The invention relates to the technical field of vibrating feeders, and particularly discloses a vibrating feeder which comprises a rack, a vibration exciter and a feeding groove, the feeding groove comprises a first groove body and a second groove body, the second groove body is connected to the lower portion of the first groove body, the second groove body is obliquely arranged rightwards, and at least one layer of screen cloth parallel to the bottom of the second groove body is arranged in the second groove body from bottom to top; the screen divides the second groove into at least an upper groove body and a lower groove body, a partition plate is arranged below the left side of the screen to divide the groove body below the partition plate into a left space and a right space, the screen comprises a fixed column parallel to the second groove and a plurality of movable rods extending in the front-back direction, and an elastic piece is installed between each movable rod and the fixed column. The front end of each layer of groove body is provided with a blocking piece used for sealing the groove body, each blocking piece is provided with an elastic pushing piece, and one side of each elastic pushing piece is further provided with a locking assembly. The size of the screen is small so that cleaning can be facilitated, and the crushing efficiency of the materials is improved by intermittently enabling the materials to fall down.

The utility model discloses a device for sorting copper and aluminum particles after crushing of waste lithium batteries, which is provided with a vibrating screen (1), and a material inlet at the upper part of the vibrating screen (1) receives materials generated by a crusher; the sorting device is also provided with a large particle sorting machine (4) and a small particle sorting machine (6); and a large particle outlet and a small particle outlet of the vibrating screen (1) are respectively connected with the large particle sorting machine (4) and the small particle sorting machine (6) through the conveying pipeline (3). By the adoption of the technical scheme, the copper-aluminum mixture generated in the waste lithium battery crushing and sorting process can be efficiently sorted, high-purity copper particles and aluminum particles are obtained, and recycling of waste materials is achieved; the process is reasonable and feasible, equipment is simple, and recovery cost is low.

The invention provides a screening device for premixed mortar production, and belongs to the technical field of premixed mortar production, the screening device comprises a rack and a screening barrel arranged above the rack, and the rack is provided with a driving part used for driving the screening barrel to rotate; the screening barrel is composed of a barrel-shaped frame and a plurality of arc-shaped screening plates, the barrel-shaped frame is rotationally connected to the rack, the arc-shaped screening plates are slidably connected to openings correspondingly formed in the barrel-shaped frame in the radial direction through first springs, and the first springs can make the arc-shaped screening plates tend to approach the center axis of the barrel-shaped frame; convex pins are arranged on the arc-shaped sieve plates, a supporting truss is arranged on the rack, guide grooves allowing the convex pins to slide in are formed in the supporting truss, and knocking pieces used for knocking the arc-shaped sieve plates are arranged on the supporting truss; the possibility that gravel particles rapidly pass through the screening barrel and are crushed due to knocking vibration can be reduced, and the final quality of gravel screening work can be improved.

The invention belongs to the technical field of tobacco production equipment, and particularly relates to an intelligent multi-stage sorting and impurity removing system for tobacco stems, which comprises three stages of sorting boxes which are sequentially connected in series, and the widths and heights of the three stages of sorting boxes in the transverse direction are sequentially increased; a first material guide separation plate and a second material guide separation plate are arranged at the lower part in the first-stage separation box, and a third material guide separation plate and a fourth material guide separation plate are arranged at the lower part in the second-stage separation box; a fifth material guiding and separating plate is arranged at the lower part in the third-stage sorting box; a first air volume adjusting assembly is arranged above the connecting position of the first-stage sorting box and the second-stage sorting box, and a second air volume adjusting assembly is arranged above the connecting position of the second-stage sorting box and the third-stage sorting box. And the side upper part of the third-stage sorting box is connected with a dust removal system through a pipeline. According to the technical scheme, the multi-stage sorting and impurity removing system has the self-learning function, the data model can be autonomously perfected and optimized, adjustment is more accurate, and sorting is more accurate.

The utility model relates to the technical field of dust screening equipment, and particularly discloses a pipeline type vortex dust screening device which comprises a main shell, an annular cavity is formed in the main shell, a variable-diameter vortex assembly is arranged at one end of the main shell and comprises a conical barrel, one end of the conical barrel is communicated with the annular cavity, and the other end of the conical barrel is communicated with the annular cavity. A guide turbofan is mounted at the other end; the pipeline type vortex dust screening device flows through the inner wall of the conical barrel and forms vortex flow under the guiding action of the multiple guide blades, so that a buffering section is formed, meanwhile, vortex airflow further enters the annular cavity and forms secondary buffering, and the dust screening effect is improved. According to the cyclone separator, the cyclone separator is arranged in the annular cavity, other large-mesh particle dust falls down and is collected in the vortex process of the annular cavity, relatively light small-particle dust is directly output, so that the required particle dust is screened, the whole structure is simple, maintenance is convenient, energy consumption is relatively low, meanwhile, the conical cylinder and the annular cavity jointly form secondary separation, and the separation efficiency is improved. And large particles can be better screened out.

The invention discloses a corn seed breeding and screening device which comprises a screening box, a screen is arranged in the screening box, the top of the screening box is communicated with a hopper, and a quantitative feeding mechanism for quantitatively discharging corn seeds is arranged on the screening box; and the quantitative feeding mechanism comprises a circular plate rotationally connected to the top wall of the screening box, two through holes are formed in the top of the circular plate in a penetrating mode, the bottoms of the two through holes communicate with a discharging pipe, and the bottom end of the hopper extends into the screening box. According to the corn seed breeding and screening device, through the arrangement of the quantitative feeding mechanism, quantitative discharging of corn seeds is achieved, the situation that too much corn seeds are discharged at a time, a screen is overloaded, the seeds are prevented from being stacked on the screen, and the screen can screen out shriveled grains, broken grains, straw chippings, dust and other impurities in the corn seeds at the maximum efficiency; the seed breeding quality is improved.

The invention relates to a screening performance control method of an airflow microporous screen, belongs to the technical field of screening efficiency control, and solves the problems that a calculation method of the screening efficiency of the airflow microporous screen in the prior art is high in cost, poor in efficiency, low in accuracy and not suitable for complex working conditions. Obtaining first predicted screening efficiency of the airflow microporous screen to be detected, and if the first predicted screening efficiency does not meet an expected target, optimizing the initial design parameters by adopting a genetic algorithm; in the operation process of the to-be-detected airflow microporous screen, for each moment, executing the following operations: if the difference value between the second predicted screening efficiency and the actual screening efficiency is greater than a preset threshold value, optimizing control parameters of a feeding speed controller and a vibration frequency controller based on the second predicted screening efficiency and the actual screening efficiency, therefore, the to-be-detected airflow microporous screen can reach the second predicted screening efficiency. The screening performance control method of the airflow microsieve is high in precision, high in efficiency, low in cost and wide in application range.

The utility model discloses a secondary aluminum crushed material airflow sorting device, relates to the technical field of secondary aluminum crushing and sorting, and aims to solve the problem that part of aluminum skimmings and light and thin aluminum sheets are brought out while light substances such as plastics are sorted by an airflow sorting machine. A fine separation mechanism is arranged below the airflow roughing machine and comprises a climbing vibrator, an airflow fine separation machine and an air blower, the climbing vibrator is arranged under a discharging port of the airflow roughing machine, an air suction port of the airflow fine separation machine is formed above the climbing vibrator, and the air blower is arranged under the airflow roughing machine. The air blower is arranged below the climbing vibrator, and the air blower communicates with the bottom end of the climbing vibrator through flexible connection so as to be used for blowing air to the climbing vibrator from bottom to top.

The invention relates to the technical field of agricultural separation equipment, in particular to a winnowing separation bin and a hay feed cleaning system.The winnowing separation bin is provided with an obliquely-arranged side wall, so that airflow entering the bin is decelerated firstly and then accelerated, and large materials and materials with the small wind area are different from thin film materials in wind area and inertia, so that the hay feed is separated from the large materials. The large materials and the materials with the small wind area are collected at the discharging opening in the bin bottom, the film materials are discharged through the air outlet, separation of the film materials and straw is completed, the separation efficiency is improved, and the content of mulching films in smashed straw feed is reduced when the device is applied to the field of feed separation. According to the hay feed cleaning system, light materials separated by the winnowing separation bin are fed into the feeding device or the light material treatment device to be further treated and collected, the stability of the separation effect can be improved, waste of the materials is avoided, meanwhile, mulching films are purified to reach the recycling standard, waste is turned into wealth, and two purposes are achieved.